Place the oatmeal, whole wheat flour and lemon juice in a large bowl. Add 1½ cups warm water, mix and leave somewhere warm overnight or for 8-12 hours.
After the soaking time is up, transfer the soaked oatmeal to a heavy bottomed saucepan. Add the whole milk and a pinch of salt. Bring to boil, stirring, then reduce heat and simmer, still stirring, for about 10 minutes. It should become thick and creamy. If it gets too thick for your liking, add a splash more milk. Take off the heat and cover, so it stays hot while you prepare the strawberry compote.
In a separate small saucepan place the frozen strawberries and honey. Simmer on medium high heat, stirring, until softened - about 5 minutes. The frozen strawberries should release quite a bit of liquid, but if it looks a bit dry add a splash of water.
Serve the hot oatmeal in a bowl, topped with the fruit compote and a dab of butter.
Notes
the overnight soaking improves the digestibility of the oats, but it also makes them quicker to cook and gives the cooked oatmeal a creamier, smoother consistency
instead of strawberries, you could use blackberries, blueberries or raspberries
try using fresh fruit instead of frozen - add 1/4 cup water when stewing the fresh fruit